gfs2_bitcount(9)

📦 version 7.3.1, in nixpkgs unstable

💅 gfs2_bitcount(9) — a Kernel API Manual moment ✨

okay so bestie, welcome to the gfs2_bitcount(9) page, which is part of the Kernel API Manual — yes, the kernel has a manual, and yes, it's iconic. sit down, hydrate, and let's get into it 🫶

🌸 NAME 🌸

gfs2_bitcount — literally just counts the number of bits in a certain state. that's it. that's the whole job. she's a specialist 💅

✨ SYNOPSIS ✨

u32 gfs2_bitcount (struct gfs2_rgrpd *rgd , const u8 *buffer , unsigned
int buflen , u8 state );

look at her. four args, returns a u32. no notes. 🔥

🎀 ARGUMENTS 🎀

  • rgd — the resource group descriptor. she's the main character, the context, the whole vibe check for the operation 💜
  • buffer — the buffer that holds the bitmaps. the actual bits live in here, no cap 🦋
  • buflen — the length (in bytes) of the buffer. important note: bytes, not bits, don't come for me 🙈
  • state — the state of the block we're looking for. we're counting bits that are in this state specifically, so pick your state wisely bestie 🎯

⭐ RETURN ⭐

The number of bits. that's the whole return value. she counted, she returned, she left. periodt 👑

🌈 SEE ALSO 🌈

okay this list is LONG, so buckle up — the kernel file is ./fs/gfs2/rgrp.c and here's everyone she's friends with (all of them (9), all of them relevant, all of them listed, no skips, i would never 😭):

like i said. long list. she knows everyone 💀💖

that's the whole page bestie, you ate that 🍓 this gem lives over in ./fs/gfs2 and the version/date stamp on it is October 2026 — so go forth, count those bits, and slay 💅✨🧚

📦 where this page comes from